4431032344421 has 4 divisors (see below), whose sum is σ = 4514636728332. Its totient is φ = 4347427960512.

The previous prime is 4431032344411. The next prime is 4431032344423. The reversal of 4431032344421 is 1244432301344.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2019130163521 + 2411902180900 = 1420961^2 + 1553030^2 .

It is a cyclic number.

It is not a de Polignac number, because 4431032344421 - 2³⁴ = 4413852475237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4431032344423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41802191876 + ... + 41802191981.

It is an arithmetic number, because the mean of its divisors is an integer number (1128659182083).

Almost surely, 2^{4431032344421} is an apocalyptic number.

It is an amenable number.

4431032344421 is a deficient number, since it is larger than the sum of its proper divisors (83604383911).

4431032344421 is an equidigital number, since it uses as much as digits as its factorization.

4431032344421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83604383910.

The product of its (nonzero) digits is 110592, while the sum is 35.

Adding to 4431032344421 its reverse (1244432301344), we get a palindrome (5675464645765).

The spelling of 4431032344421 in words is "four trillion, four hundred thirty-one billion, thirty-two million, three hundred forty-four thousand, four hundred twenty-one".